One vertex per element, one color per generator, with an edge from x to x·s.
(9,10)(11,16)(12,15)(13,14)(17,18,22,24)(19,27,29,25)(20,23,31,28)(21,32,30,26)(1,2)(3,5)(4,6)(7,8)(9,10)(11,16)(12,15)(13,14)(17,19,21,20,22,29,30,31)(18,23,26,27,24,28,32,25)(1,3,4,7)(2,5,6,8)(10,14)(15,16)(17,18)(19,28)(20,25)(21,26)(22,24)(23,29)(27,31)(30,32)(2,6)(5,8)(9,11,13,12)(10,15,14,16)(18,24)(23,28)(25,27)(26,32)(9,12,13,11)(10,15,14,16)(17,20,30,19,22,31,21,29)(18,25,32,28,24,27,26,23)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.